Blizzard could have avoided so many of these issues by having a solo offline version and just making it clear that playing offline meant no access to AH, chat with friends, random groups, and even special online events or ladders if they want to go that way. Just make it impossible to use the offline characters in online or group play to avoid the cheating and a lot of people would have been much happier.

I also think they could have been more explicit (maybe a handout in the box) in explaining exactly what the online side meant in terms of access and gameplay.

At the end of the game, you’d have either to destroy Diablo, control him or make everyone a demon-human hybrid. Either way, you die and all magic in Sanctuary is gone forever. (Anon.) [G]Kill, [B]Banish, or [R]Bond With? (azaael)

When Deckard Cain begins one of his stories you can use the dialogue wheel to choose whether to listen or tell him to shut up. Doing so earns you Heaven/Hell points. (bernardparsnip)

It would have given you a character visual customizer! I’d have taken this. On the flipside, after Blizzard put the votes in for what color the stock female Demon Hunter should have, the fanbase splits over ‘Red’ or ‘Blonde.’ Wars are almost started. (azaael)